<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8"/>
    <title>首页</title>
</head>
<body>
    <a th:href="@{/alipay(orderNo=2)}">点击生成支付宝二维码</a>
    <span th:text="${qrPath}">二维码图片地址</span>
    <img src="D:/qr-2.png"/>
</body>
</html>